Electric railway-signal.



c. H.sMITH. ELECTRIC RAILWAY SIGNAL. APPLICATION FILED DEC. 7,1907.

908,895, Patented Jan. 5, 1909.

:"JTcaZl- 'it may concern:

CHARLES H. SMITH, oFLEBANoN, PENNSYLVANIA.

ELECTRIC: RarLwAY-'srarran Nations-,8.9m

I e-itknown that I, CHARLES II.I SMITH, a citizen of the United States.,residing at Lebanon, in the county of `Lebanon,-State of Pennsylvania,haveinvented a new and `use'- ful ElectricItailwayfSignal, of which thefollowing is a speci'cation.

My-inventlon relates tdanelectric'railwayy signal of the type commonly.known as tro ley-actuated contacts, and consists-of'means locatedadjacent atrolley wire` adapted*to-.bef4

engaged by' a trolley wheel to close-anelectricgcircuit for the purposeofl operatingarisigff'V nalglgenerally at.' some distant point, .as-afnoication of the approach 4of acaror'train.'

' t adapted to become operative only. on the passing of a car in onedirection, thatisa car.

passingsay `to the left would operatethe sig` p would have no effect.

^ D desi rial, whic is contained in the box A, and hasnal means, whileone For the purpose of explaining 'm `invention, the accompanyingdrawingf nstr'ates-4 a satisfactory reduction off-the same to rac-r,.tice, but the\ important instrumenta ities thereof maybe varied, andso it is to be understood that the invention is not limited "to thespecific arrangement and organization l shown and described.

Figure l represents a sideelevation of an electric railway signalembodying the invention. Fig. 2 represents a section thereof onliner-@Fig 1. Fig. 3 represents a perspective view of a detachedportion.

Similar letters of-reference indicate corresponding parts in thefigures.

Referring to the drawing :--A designates a boxy orzbox-like structure,and B designates a trolley ear, which is secured thereto in any suitablemanner and engaging the trolley wire C, as well known. ates a block ofinsulating matemounted there' n the lever E, on one side of which istheforwardly projecting piece F preferably of the form of a quadrant andconstituting a lcontact-maker, said lever having also thereon atitslower end a shouldervG,

l which projects laterally outward therefrom.

H desi ates an arm, which is ivotally connecte with the lever E, anda' ated to abut a ainst the shoulder G, where y said arm, w en movedinthe'direction of the arrow 3, will carry'with-it said lever. On thelower end of the arm H is an inwardl extending limb J, which is adaptedto be 1n the Specicaton of LettersPatent. Application med 'December f7,1907. sriai N6. 405,473.

furtherl consists of means which are" passingr to the Patented aan. 5,1909.

` path of an al proachirig trolley-wheel and en aged' by. t ev saine..Connected with the lock=D, is thestopK; whiclr-isf'so located asto'havei-the -lever E, cuits-return motion and normal position, abut,thereagainst,' and com nected'v'withfthe' block-I) and the'lever E, is

thc-spring: whose tendency is to return said lever-to its. normalposition.

. vlli'designatesaplate of resilient material forming.; a; spring, koneend offwhich is connected by. the v iece M^ with thelv block D, andtheotherend as vmounted upon it the roller contacttherewith when. theAlatter is advanfcedthereagainst.

Theloperation is asv follows r--When the car is. in the direction ofarrow 1, and-it'=rcaches-the arm II and it is desired lto signal ahead,the trolley wheel strikes the limb Jfand movessaid arm in the direc-'tion of the-'arrow'` 3, when, as the leverE isengaged' by saidV arm,the' piece ad-4 vanced tothe roller: N and rides upon the same, thismaking contact and closing the: circuit, Whereby-l the signaloccasioned.

When the trolley Wheel trips said limb J or clears the same, said armislreleased, when the-spring L causes the lever E and said arm H toreturn1 t'o their normal positions, the lever abutting againstthe shotderl'z.4 as a stop, and the circuit being broken. Should the car move inthe direction of arrow '2, the signal can not be given. In this case,the trolley wheel` strikes the limb J, and the arm H yields in saiddirection, and so clears the trolle wheel Without disturbing the leverE, w ich, as is evident, remainsl at rest against the shoulder K. p Itwill be seen that on .the forward movement of the lever E when thecontact piece F ridesfreely on the roller N, the spring or resilient armM causes said roller to press' against said piece and make the .contactas effective and long as possible, thus assuring the positive closing ofthe current.

on the roller, t us continuing the circuit until said piece' fullyclears the roller, when the circuit is broken. The shoulder or stop K isprovided with the screw K', to whic if desired, may be attached acircuit wlre for use for another" purpose. Having vwhat I c a LettersPatent, is:-

1. In anyelectric railway signal of the On the return motion ol"v thelever,` the lpiece F rides freely backward thus described my inventionim as new and desire to secure by N, .which is adapted to have themember F A character stated, a contact maker, a lever carrying thelatter, an arm mounted on said lever, sald armand lever being adapted tomove together 1n one direction of said contact makerI and being movableindependent 0f the other in the opposite direction thereof, said contactmaker bein disposed adjacent the pivotal connection etween said leverandarm and an insulated support on which said lever is mounted.

2. In an electric' railway si al of the character stated, acontact-mailer consisting of a contact piece, and a resilient armcarrying the same combined with a .two

part carrier, the. parts" being adapted to move together in onedirection of the carrier and one of' the parts being movable independentof theother in the'opposite direction of said carrier, and a contactpiece` carried by one part of the carrier.

3. In an electric` 'railway signal, a contact-maker consisting of acontact piece substantially of the orrn'of a quadrant, an oppositely.disposed contact piece; and means for carrying the `first named piece tothe second named and holding the. pieces engaged in the forward andreturn motions of the first named piece, said means being jointed andthe parts thereof being'adapte'd to move together in one direction ofthe car-f rier and one of the parts being movable in'- dependent of theother in the opposite direction of said carrier.

4. In lan electric railway signal of the character stated, oppositelydisposed contacts, one of which is carried by a resilient arm, and the'other by a pivoted arm, the first named contact being in the path ofthe second named contact, said pvoted arm being jointed, with one partmovable indepeg'dent of the other in one direction of its movement.

5 In an electric railway signal, a contact-maker, a lever carrying thesame, meansl for pivotally mounting said lever, an arm y 'pivotallymounted on said lever, means `adapting said arm to move with said lever'in the advance direction of `said contactmaker, and a stop for saidlever onthe return motion thereof, said arm being out of the path ofsaid o stop on said return motion. 1

v5o '6. In an electricrailway signal, a con-` tact-maker, a levercarrying the same, an

pivoted, an arm pivotall mounted on said ever, a shoulder on sai leverWithwhich said arm may engagein the advance motion of the contact-maker,thus engaging said insulating 'support on which said lever is` leveran'd arm as one, and a stop cn said support for said lever on the returnmotion of sald'contactmaker said arm'being out of the pathof said stopon said return motion.V

7. In an electric railway signal,a contactmaker and a two. art carriertherefor, the

two parts thereof -eing in different planes, one member being pivotallymounted on the other part and e'ngageablel therewith in the advance ofsaid contact-makerand'having -a motion independent of thesame on thereturn of said contact-maker,

CHARLES H. SMITH.

Witnessesz' i i l i i i GEORGIA E. HENRY, G. B. MARQUABT.

